williams



No. 645,067. Patentgd Mar. l3, I900. F. BURGER &. H. M. WILLIAMS.

SOUND FINDER.

Applicatim filed Dec. 0, was. *Renewea July a1, 1699.

(No Modal.)

THE uomus Penn; :0. mcwoumou wawmsro u, 0.1:.

UNITED STATES PATENT OFFICE.

FRANZ BURGER AND HENRY M. W'ILLIAMS, OF FORT NVAYNE, INDIANA; SAID BURGER ASSIGNOR OF ONE-HALF OF HIS'RIGI-IT TO SAID WILLIAMS.

SOUND-FINDER.

SPECIFICATION forming part of Letters Patent No. 645,067, dated March 13, 1900. Application filed December 6, 1898. Renewed July 31, 1899. serial No. 726.691. (No model.)

To all whom it zncty concern.-

Be it known that we, FRANZ BURGER and HENRY M. VVILLIAMs, citizens of the United States, residing at Fort Wayne, in the county of Allen and State of Indiana, have invented certain new and useful Improvements in Sound-Finders, of which the following is a specification.

Our invention relates to devices for ascertaining the source of sound; and it consists of a sound-receiver having atransverse tube open at the outer end and closed at the center, with earpieces and tubular connections between the ends of the said divided tube, as fully set forth hereinafter and as illustrated in the accompanying drawings, in which- Figure 1 is a view in part section, illustrating our improved'sound -finder in one construction. Fig. 2 is a sectional View showing the improved sound-finder as diiferently constructed to serve also as a receptacle for liquids.

In the construction shown in Fig. 1, A is a plate or disk, which may be solid or hollow and through which extends an opening or tube a, divided in the center by a dia phragm or partition I), so that the said tube is open at each outer end toward one side of the said plate or disk. This plate or disk we denominate a receiver, inasmuch as it su pports the receiving-tube a and as it may be either a solid block or plate or may be hollow, constituting a receptacle for liquid, as set forth hereinafter. \Vith each section of the tube a, on opposite sides of the partition I), communicates a tube 0, and from the outer end of each tube a flexible tube E extends and is provided at its outer end with a suitable earpiece F. When these earpieces are applied to the ears and the receiver A is held in the hand and pointed in the direction from which a sound proceeds, the fact that the instrument is so pointed will be evidenced by equal impressions produced upon the two ears. If, however, the receiver is turned to one side or the other, so that one end or the other of the tube a is pointed more or less accurately it will be very eifectiveiu connection with the use of smokeless powder in determining the source from which the firing proceeds. For such purpose instead of using a separate device we may make use of the ordinary canteen, which constitutes the receiver A, as shown in Fig. 2, the tube aextending through the cen ter of the canteen and the tubes 0 c branching from the tube Cl and extending through the casing of the canteen, as shown. In such case the neck e of; the canteen (proyided with the stopper H) may be situated between the ends of the tubes 0 0, so as to serve as a convenient handle. In this case the sides of the receptacle may be sunken in, so as to constitute flaring months for the ends of the tube a to better collect the sound, as shown in Fig. 2.

Without limiting ourselves to the precise construction and arrangement of parts shown, we claim- 1. The within-described sound-finder consisting of a receiverA provided withatransverse tube a, having a central partition, earpieces F, F, and tubular connections between the earpieces and the separate ends of the tube a, substantially as described.

2. The combination of the receptacle A, transverse tube a, open at the opposite ends and closed in the center,tubes c ccommunicating with the different sections of the tubea, and flexible tubes communicating with the tubes 0 and provided with earpieces, substan' tially as set forth.

3. The combination of the hollow receptacle provided with a neck and stopper, the tubes at extending through the receptacle and In testimony whereof We have signed our 10 names to this specification in the presence of closed at the center, and earpieces, and tubular connections between the latter and the ends of the tube a, substantially as set forth. two subscribing Witnesses.

4. The combination of the receptacle A,

tube a havinga central partition and flaring AMS outward at the opposite ends, and earpieces J communicating with the different sections of the tube a, substantially as and for the purpose described.

Witnesses:

GEO. K. TORRENOE, JOHN P. ANSPACH. 

